There are also a number of other fascinating facts about natural Baltic Amber it floats in salt water but sinks in fresh water; its hardness measures 2.0-2.5 on the Mohs Hardness Scale; its density amounts to 0.96-1.096g/cm3. When amber is touched with fire, it produces an aroma of burning pine.
Location of Tanggu on a map. Tanggu is a city found in Tianjin, China. It is located 39.02 latitude and 117.65 longitude and it is situated at elevation 6 meters above sea level. Tanggu has a population of 535,298 making it the 2nd biggest city in Tianjin. It operates on the CDT time zone, which means that it follows the same time zone as Tianjin. Quick facts
The Luding Bridge is built over the Dadu River in Luding County, Sichuan Province. It is the oldest chain suspension bridge in China, and a milestone in architecture. Construction was completed in 1,706 during the reign of Emperor Kangxi of the Qing Dynasty. It was built 96 years ahead of the first chain suspension bridge in North America, and 36 years ahead of the first one in Europe.